--- pinball-0.3.1/base/Config.cpp	2009-10-13 18:33:38.000000000 +0200
+++ pinball-0.3.1/base/Config.cpp	2009-10-13 18:37:12.000000000 +0200
@@ -416,7 +416,7 @@
   m_sDataDir = string(EM_DATADIR) + "/";
   m_sExeDir = "./";
   if ( *( m_sDataDir.c_str() ) != '/' ) {
-    char* ptr=0; 
+    const char* ptr=0;
     char* ptrw = 0;
     //cout<<"relative to exe file"<<endl;
     ptr = (strrchr(argv0,'/')); // unix /cygwin / check win32 
